y^2-8=13

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Solution for y^2-8=13 equation:


Simplifying
y2 + -8 = 13

Reorder the terms:
-8 + y2 = 13

Solving
-8 + y2 = 13

Solving for variable 'y'.

Move all terms containing y to the left, all other terms to the right.

Add '8' to each side of the equation.
-8 + 8 + y2 = 13 + 8

Combine like terms: -8 + 8 = 0
0 + y2 = 13 + 8
y2 = 13 + 8

Combine like terms: 13 + 8 = 21
y2 = 21

Simplifying
y2 = 21

Take the square root of each side:
y = {-4.582575695, 4.582575695}

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